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biochem103
Lipids
| Question | Answer |
|---|---|
| What compound is used to synthesize cholesterol? | Acetyl CoA |
| Where is cholesterol made? | Liver |
| Where is excess cholesterol not needed by the body transported? | Gall bladder |
| Excess cholesterol might accidentally precipitate out as what? | Gall Stones |
| What steroid hormone regulates Na+ and K+ ions and promotes water retention? | Aldosterone |
| What steroid hormone regulates the conversion of proteins to carbohydrates? | Cortisone |
| What is the emulsifier found in egg yolks called? | Lecithin |
| What kinds of lipids are found in cell membranes? | Phospholipids, Glycolipids, and Cholesterol |
| What are the products of the saponification of a fat? | Glycerol and 3 salts of fatty acids |
| Cholesterol is used to synthesize what three types of compounds? | Steroid hormones, vitamin D and bile salts |
| What general structural feature do phosphatides share with soaps? | Ionic end (hydrophilic) |
| What structural feature is found in most prostaglandins? | 5 carbon ring |
| What functional group is found in a saponifiable lipid which is NOT found in a nonsaponifiable lipid? | Ester linkage |
| The lack of an enzyme to metabolize glycolipids may cause what diseases? | Niemann-Pick, Gauchers, and Tay-Sachs |
| What functions does fat serve in the body? | Energy, insulation, and protection |
| Can a wax be converted into a soap? | Yes but difficult |
| What are the differences between a fat and an oil? | Fat is a saturated fatty acid and oil is an unsaturated fatty acid |
| Why do unsaturated fatty acids have lower melting points than saturated fatty acids? | they have cis double bonds and do not stack well |
| How do the products of the acid hydrolysis and base hydrolysis of fat differ? | Acid hydrolysis = fatty acids and Base hydrolysis = salts of fatty acids |
| Why does coconut oil (a vegetable oil) have a melting point similar to fats from animal sources? | it has very few double bonds |
| Glycerol backbone | -Phospholipids -Fats -Glycolipids |
| Sponifiable | -Wax -Triglyceride -Phosphotriglyceride -glycolipid -Oil |
| Hydrophilic End | -Phospholipids -Cephalin -Lecithin -Soap |
| Lipids found in cell membranes | -Phospholipids -Glycolipids -Cholesterol |
| Cholesterol synthesizes what 3 compounds? | -Biles Salts -Vit D - Steroid Hormone |
Created by:
JadeaGuldan
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